Steam eng



(No Model.) 2 Sheets- Sheet 1.

M. N. LYNN.

$TEAM ENGINE.

Patented Feb. 24, 1885.

WITNESSES V I I JNVENTOR .Attorney;

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2 Sheets-Sheet 2.

M. N.'LYNN.

STEAM ENGINE.

( 0 Model.)

gatented Feb. 24, 1885.

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MIRABEAU N. LYNN, OF RISING SUN, ASSIGNOR TO THE AMERICAN ELEG- TRIO HEADLIGHT COMPANY, OF INDIANAPOLIS, INDIANA.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 313,005, dated February 2%, 1885.

Application filed May 20, 1584. (N model.)

To all whom it may concern:

Be it known that I, IVIIRABEAU N. LYNN, of Rising Sun, in the county of Ohio and State of Indiana, have invented certain new and useful Improvemeutsin Steam-Engines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and

to the figures and letters of reference marked thereon.

My present invention is designed as an improvement upon multiple-cylinder engines of the class illustrated in applications filed by I5 me January 10, 1884, and April 10, 1884, (numbered, respectively, 117,018 and 127.383,) to which engine it is here shown as applied; and my invention consists, essentially, in the novel and improved construction of the frame or stationary portions of the engine, whereby the cost of construction and the weight of the machine are materially reduced, various of its parts rendered interchangeable, thus facilitating repair, and the whole frame so constructed and organized as to present a compact, neat, and ornamental engine of great speed and power compared with its size and weight, all as hereinafter more fully and in detail described, and pointed out in the claims.

In the accompanying drawings, Figure l is a side view, and Fig. 2 an end View, of the main frame or casting. Fig. 3 is a longitudinal, and Fig. 4 a transverse, section of the main frame or casting with the piston and valve-cylinders in position. Figs. 5 and 6 are detail views showing the steam-port Figs. 7 and 8 illustrate the manner of supporting the shaft. Fig. 9 is a top view of the cylinder-head. Fig. 10 is a plan view of the plate or casting to receive the end of the valve-cylinder. 3

Similar letters of reference in the several figures indicate the same parts.

The main frame or casing A, preferably cast in one piece of some light and strong metalsuch, for instance, as phosphor-bronzeis composed of the cylindrical or other suitableshaped portion, a, to which the heads B B are applied and fastened by bolts in the usual 50 manner the base-piece or support a, provided with an opening for the reception of a tube,

b, for the escape of the water of condensation;

,the three openings M, which are screw-threaded for the reception of the cylinders G; the three openings a", for the valve-cylinders D, and the bearing-block (d, for the main shaft E. The piston-cylinders O are, for the sake of lightness and economy, constructed of brass or other suitable tubing, screw-threaded at one end for attachment to the casing A. The cylinder-heads C screw into the ends of the cylinders O, and are provided with the sockets c c, to receive a spanner or other form of wrench for tightening or loosening them. As thus constructed and combined, the several 6 cylinders are susceptible of being removed, interchanged, replaced, or repaired independently and expeditiously, any tubing of the requisite strength, diameter, and uniform bore beingreadily applied.

At or near the outer end of each cylinder is formed an opening or port, 0, and over said opening is fitted a casting, 'F, which is bolted or otherwise securely fastened'to the side of the cylinder. The casting F is made hollow or recessed, as shown by the dotted lines in Figs. 5 and o, and in the sectional View, Fig.

3, and it has the segmental base or flange conforming to the curve or contour of the cylinder. By the side of each cylinderC is located 8 a va1ve-cylinder, D, also composed of a tube screwed to the capplate d at one end and passing through the casting F, into which it is threaded and secured by the nutf, suitable packing material being interposed, if found 85, desirable. The cap-plate d is fastened to the seat of, formed on the main casing by bolts passing through the flanges or earsf.

The valve-cylinders I) are each provided with a series ofholes or openings, (1, at or near 0 their outer extremities and within the casting F, for the passage of the steam to and from the cylinder U.

As the engine described is designed to run at a high speed, it is of great importance not 5 only that the parts should be convenient of access, but that the friction of the running mechanism should be reduced to a minimum. \Vith this end in view, I have mounted the main shaft in a roller-bearing, T. Upon the shaft are forged, shrunk, or otherwise suitl ably secured two flanges or collars, t, proagainst the inner surface of the bearing S by the introduction of a key or thin piece of some suitable material under the blocks t and,

if desired, springs or adjusting-screws may be introduced under said blocks.

As thus constructed, the friction of the shaft in its bearing is distributed between the several rollers and their journals, and as the j on r nal is located within the main casing it is subject to the lubricative action of the exhauststeam, water of condensation, and oil.

The many advantages secured by the above simple yet efficient and novel arrangement and combination of parts will be obvious to any one skilled in the art. It will be observed, in the first place, that I dispense with much of the heavy casting usually employed in engines of this class, while at the same time preserving ample strength. The connections are such as require no special skill either to set up, repair, or construct the engine,r'ead y to receive the operating mechanism, and by dispensing with projecting bolts and nuts on the cylinders the latter can much more conveniently be wiped off or polished and made attractive. Moreover, access can readily be had to almost any part of the working mechanism by simply removing the cylinder-heads, the valve-cylinders, or the castings F, a point of very considerable importance in engines of this class where all the working parts are inclosed or contained within a casing.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a steam-engine, and in combination with the main frame or casing for the operating mechanism, the piston, and valve-cylinders removably secured to the main casing and communicating with the interior thereof, the said valve-cylinders being perforated and communicating, through an intermediate support with the piston-cylinders, substantially as and for the purpose described.

2. In a steam-engine, the main frame or casing for the operating mechanism, provided with screw-threaded openings, the piston-cylinders constructed of tubing and provided with screw-threaded extremities for attachment to the casing, and removable heads united to the cylinders by screw-threaded connections, substantially as described.

3. In a steam-engine, and in combination with the main inclosingcasing and piston-cylinders applied thereto, the casting F, applied to the piston-cylinders, and provided with the opening or port communicating with the interior of said cylinders, and the valve-cylinders removably attached to thecasing and extending into and through said'ca'sting F, substantially as described.

4. In asteam-engine, such as described, the valve cylinder removably attached to the main casing and casting F, substantially as described.

5. In a steam-engine, such as described. the combination of the main casing A, cap-plate d, valve-cylinder D, casting F, and the pistoncylinder 0, the said valve-cylinder being screwed into the cap-plate and casting, as and for the purpose specified.

6. The herein-described main frame or casing A, for the reception of the operating mechanism of a steam-engine, provided with the removable cylinders 0, having threaded-heads u C, the valve=cylinders D, cap-plate d, and casting F, uniting the cylinders O and D, as and for the purpose set forth.

MIRABEAU N. LYNN.

Witnesses:

A. J. STEUART, CHAS. It. Bonn. 

